Posted 5 Nov 2014 i am using CP1E cpu . i wants to use increment counter . if i use CNT instruction it was counteing decrement count . anybody can share the instruction for same satheeshkumar Share this post Link to post Share on other sites
Posted 5 Nov 2014 (edited) Forget the counter and use increment instruction (++ or ++B if you prefer BCD), and a compare instruction. Dont forget to use the rising edge of your input. If you really want to use a counter instruction, maybe reversible counter (CNTR) is available in your PLC? It has a increment input and a decrement input. Edited 5 Nov 2014 by pfort Share this post Link to post Share on other sites